Door-gage.



PATBNTBD MAR. 5, 1907.

J. T. RooT. DOOR GAGE. APPLICATION I'ILEl-D 0OT.29. 1906.

NTTET) STATES Parana caricia.

Specification of Letters Patent.

Patented March 5, 1907.

Application filed October 29, 1906. Serial No. 340.965.

To (LZZ whom, t muy concern:

Be it known that I, JOSEPH T. ROOT, a subject of the King of GreatBritain, and a resident of Boston, in thecounty of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements inDoor- Gages, of which the following is a specification.

This invention relates to marking-gages, and especially to a new articleof manufacture adapted especially for use by carpenters in marking theposition for hinge-butts, locks, and strikers on doors and the framestherefor.

The invention consists in a suitable framework provided with a pluralityof straight edges and a plurality of adjustable members provided withknife-edges which cooperate with said straight edges to give therequired markings.

It consists, further, in providing said gage with scales by which theposition of the adjustable knife-edges may be readily determined.

It consists, further, in certain novel features of construction andarrangement of parts which will be readily understood by reference tothe description of the drawings and to the claims to be hereinaftergiven.

Of the drawings, Figure 1 represents a plan of a device embodying thefeatures of this invention. Fig. 2 represents an invert ed plan of thesame. Fig. 3 represents an end view of the same. Fig. 4 represents asection on line 4 4 on Fig. 1. Fig. 5 represents'a similar sectionshowing the adjustable cutting members in adjusted position, and Fig. 6represents a section on line 6 6 on Fig. 2.

Similar characters designate like parts throughout the several figuresof the drawings.

VIn the drawings, 1() represents a frame pro vided with a plurality ofstra-ight edges 11, 12, and 13. The upper and lower faces of said frame10 are each provided with a groove 14 or 15, extending from one straightedge 11 to its opposite parallel straight edge 12. In the groove 14 ismounted an adjustable member 16, provided with a cutting Aedge 177extending at right angles thereto. This cutting edge 17 extends througha slot 18 in an outer adjustable member 19. A suitable clamping-screw 20passes through the slot 18 in the member 19 and also through a slot 21in the member 16. The slots 18 21 extend longitudinally of the members19 and 16 and pernit of an adjustment of these members longitudinally ofeach other and longitudinally of the groove 14.

The member 19 is provided at one end with an outwardly-extending cuttingedge 22, while at the other end it is provided with aninwardly-extending cutting edge 23, these cutting edges 22 23 coacting,respectively, with the straight edge 11 and 12 of the frame 10. Thecutting edge 22 is always a slightly greater distance from the straightedge 11 than the cutting edge 23 is from the straight edge 12, thisdifference being for a purpose which will be hereinafter described.

As shown in Fig. 4, the knife-edge 22 is adapted to mark the position ofthe inner edge of the butt of a hinge on a door-frame, while the cuttingedge 23 is similarly adapted to mark the inner edge of the coasting buttof a hinge on the door itself, the straight edge 11 in the one casebeing held in position against the inner face of the rabbet of thedoor-frame and in the other case the straight edge 12 is held in contactwith the inner face of the door. The difference in the positions oftheknife-edge 22 relative to the straight edge 11 and the cutting edge 23relative to the straight edge 12 is sufficient to always permit therequisite amount of clearance necessary for the proper closing of thedoor when the door is hung. On the frame 10 adjacent to the plate 19 isa scale 24, by which the position of the cutting edges 22 and 23 may bereadily determined.

On the under side of the frame 10 in the groove 15 is similarly locatedan adjustable member 25, provided with a knife-edge 26, extendingthrough a slot 27 in a superimposed adjustable member 28, provided witha cutting edge 29. The edges 26 29 are located at the same distance fromthe center of the frame 10, so that they are adapted to simultaneouslycut parallel lines, said lines being cut parallel to the inner face ofthe rabbet of the door-frame when the straight edge 12 is held inposition against the same. These cutters 26 and 29 are adapted to markthe position of the striker on the door-frame, and when adjusted intheir proper position relative to the straight edge 12 they are held inposition by means of the clamping-screw 30 passing through the slot 27and a slot 31 in the adjustable member 25. rThe position of theknifeedge 29 relative to the straight edge 12 may be determined readilyby means of lOO TIO

the scale 32 on the frame 10, adjacent to the adjustable member 28. Thismember 28 is similarly provided with a scale 33, by which the positionof the knife-edge 26 relative to the knife-edge 29 may be readilydetermined.

l/Vhen it is desired to mark the position of the front face of the lockon the door, the adjustable members 16 and 19 are removed from the slot14 and are reversed, being replaced in said groove 14 in the positionshown in the upper part of Fig. 5. As will be seen by reference to thisfigure, the cutting edge 22 extends inwardly, while the cutting edge 23of said member extends outwardly, while the member 16 has been turnedover, so that its cutting edge 17 extends inwardly. Said edge 17 in thisposition is at the same distance from the center line of the frame 10 asis the cutting edge 22, so that with the straight edge 12 in contactwith the inner face of a door the knife-ed ges 17 and 22 will mark theposition on the door for the front plate of the lock.

The location of the knife-edge 17 from the straight edge 12 may bereadily determined by means of the scale 34 on the side of the member16, while the position of the knifeedge 22 relative to the knife-edge 17may be l readily determined by means of the scale 35 upon the side ofthe member 19. Wlhen in such adjusted position, the members are clampedby means of the clamping-screw 20.

The frame 10 is provided with a cylindrical hole 36, extendingtherethrough at right angles to the grooves 14 and 15, and in this hole36 is slidably mounted a rod 37, held in adjusted position therein bymeans of the setscrew 38. This rod is provided at its outer end with arotary cutter 39, and the position of said cutter 39 relative to thestraight edge 13 is readily determined by means of the scale 40 on saidrod 37. This cutter 39 may be used to readily mark lthe position of anyother member to be used in connection with the hanging of the door-as,for instance, the location of the knob or the keyhole to the lock. Thisdevice makes a very convenient gage, which is readily adapted for theuse of carpenters or others hanging doors, as it provides for suitablecutting edges which will locate accurately the position of the variousbutts, locks, and strikers to be used in connection with the hanging ofthe door, so that the door and frame may be accurately mortised out forthe reception of these members, so as to present a finished appearancewhen the work has been completed.

The device, while arranged primarily for use in connection with thehanging of doors, is equally well adapted for making markings formortises of any nature in connection with the construction of anyarticles inanufactured from wood. The rotary cutter 39 and the rod 40provide a ready means of using the device as an ordinary marking-gage.All the cutters have knife-edges which are adapted to cut suiiicientlydeep to dispense with the necessity for any further cutting exceptacross the ends. When very heavy doors are being hung, where the cuttersare not adjustable sufliciently to mark both sides of the mortise atonce, the cutter 23 may be used for the inner marking, while the rotarycutter 39 may be used for the outer marking.

1t is believed that from the foregoing the operation of the inventionwill be thoroughly understood without any further description.

Having thus described my invention, l claim- 1. In a marking-gage, thecombination of a straight edge, a slotted member adjustable thereinprovided with a cutting knife-edge a scale for determining the locationof said cutting edge relative to said straight edge, a second slottedmember provided with a cutting knife-edge extending through the slot inthe other member and adjustable to and from the other cutting edge g andmeans extending through said slots for securing said sec-ond member inposition relative to the other member.

2. In a marking-gage, the combination of a straight edge; two slottedmembers movable longitudinally of each other with their adjacent facesin contact and each provided with a cutting knife-edge g and meansextending through said slots for retaining said cutting edges in suchadjusted position.

3. In a marking-gage, the combination of a straight edge two slottedmembers movable longitudinally of each other with their adjacent facesin contact and each provided with a cutting knife-edge; a scale on eachof said members to determine the position of said knife-edge to saidstraight edge; and means extending through said slots for retaining saidcutting edges in such adjusted position.

4. In a marking-gage, the combination of a straight edge; two memberseach provided with a cutting knife-edge with one side parallel to saidstraight edge said two parallel sides being the sides farthest apart;means for adjusting said members relative to each other and to saidstraight edge g means for retaining said cutting edges in said adjustedposition; and means for determining the location of said cutting edgesrelative to each other and to said straight edge.

5. ln a marking-gage, the combination of a frame provided with aplurality of straight edges and a groove extending from one side to theother; a pair of reversible adjustable members mounted in said grooveeach provided with a cutting edge to adapt said cutting edges to operatein connection with either of two straight edges; and means for securingsaid members in adjusted position.

6. In a marking-gage, the combination of IIO a frame provided with aplurality of straight edges and a groove extending from side to side; apair of members adjustable longitudinally of said groove each of saidmembers being provided with a slot lengthwise thereof; a cutting edge onthe outer member; a cutting edge on the inner member extending throughthe slot in the outer member; and means for securing said members inadjusted position.

7. In a marking-gage, the combination of a frame provided with aplurality of straight edges and a groove extending from one straightedge to the other an adjustable slotted member in said groove providedwith two cutting edges extending at right angles thereto in oppositedirections; an adjustable member beneath said slotted member providedwith a cutting edge adapted to pass through said slot when not in use;and means for clamping said members in adjusted position.

S. In a marking-gage, the combination of a frame provided with twoparallel straight edges; a member at right angles thereto provided withtwo knife-edged cutters extending in opposite directions and each havingits side farthest removed from its coperating straight edge parallelwith said straight edge; and means for clamping said mem er` in adjustedposition.

9. In a marking-gage, the combination of a frame provided withtwoparallel straight edges; a member at right angles thereto pro vided withtwo cutters extending in opposite directions the outwardly-extendingcutter being located farther from its cooperating straight edge than theother is from its straight edge; and means for clamping said member inadjusted position.

l0. In a marking-gage, the combination of a frame provided with twoparallel straight edges and a groove extending from one straight edge tothe other; a member in said groove provided with two cutters extendingin opposite directions the outwardly-extending cutter being locatedfarther from its cooperating straight edge than the other is from itsstraight edge; and means for clamping said member in adjusted position.

l l. In a markingegage, the combination of a frame provided with twoparallel straight edges; a member at right angles thereto provided withtwo knife-edged cutters extending in opposite directions one at each endof said member; means for clamping said member in adjusted position; anda scale on said member to locate the position of said member.

Signed by me at Boston7 Massachusetts, this 25th day of October, 1906.

JOSEPH T. ROOT.

Witnesses:

WALTER E. LOMBARD, EDNA C. CLEVELAND.

